Pulling timing for nitrous

[SRT10KLLR]

What is the best way to pull timing in order to run nitrous? It is for a 2010 Camaro L99 A6. We want to spray it with a 150 shot but don't want to have to re-flash a nitrous tune every time we spray. Instead of getting a timing controller could we trick the IAT's to pull timing or something?

[ScarabEpic22]

You can do it with a switch and relay on the IAT wire, when you flip the switch have it ground the IAT sensor to the ECM so it sees the lowest value. Then use that column in the tune file to pull as much timing as you want. Not perfect and you might have issues if the IATs are way different than what the tune's setup for but it will work.

[SRT10KLLR]

I read that there is a COS that has nitrous control but I think it was with the older PCM's.

[ScarabEpic22]

Yes if you have a 512kb LS1 PCM then you can run any of the 3 or 4 COS EFILive offers. No dice for 1MB LS1 guys, E40 (2.5Bar COS available though), or E38/67 (but these dont really need one to run boost anyway).

[Highlander]

I can sell you a very nice harness that will deal with the timing part no problems. Just tune the car accordingly.

[minytrker]

I use the Lingenfelter box for pulling timing.